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Kubota B2910, Workshop Manual

The Kubota B2910 Workshop Manual is essential for maintaining and servicing your Kubota B2910 tractor. With detailed instructions and diagrams, this manual covers all aspects of the machine's operation. Download your free copy from manualshive.com and keep your Kubota B2910 in top condition for years to come.

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2-S2

B7800HSD (SUPPLEMENT), WSM

ELECTRICAL  SYSTEM

2. CHECKING  AND  SERVICING

[1] STARTING  SYSTEM

(1) Checking and Servicing

(A) Safety Switches

Checking Safety Switches

A defective location can be adjusted by checking the function of

the safety switches one by one in the table below.

(Reference)

W1011203

Clutch Pedal Switch, Speed Control Pedal Switch, Mid-PTO
Shift Lever Switch and PTO  Shift Lever Switch Continuity

1. Refer to former B2410-B2910 WSM (97897-12271) page 9-S10.
2. If the safety switch is defective, replace it.

W1011406

Seat Switch Continuity

1. Disconnect the leads from the seat switch (1).
2. Connect the circuit tester to the seat switch connectors (2).
3. Measure the resistance between the connectors (2) of the seat

switch (1).

4. If the seat switch is defective, replace it.

W1011523

Seat Reverse Switch Continuity

1. Disconnect the leads from the seat reverse switch (1).
2. Connect the circuit tester to the seat reverse switch connectors

(2).

3. Measure the resistance between the connectors (2) of the seat

reverse switch (1).

4. If the seat reverse switch is defective, replace it.

W1011668

Safety switch name

Switch type

Clutch pedal switch

Normal open

Speed control pedal switch

Normal open

Mid-PTO shift lever switch 
(Mid-PTO model)

Normal open

Rear-PTO shift lever switch

Normal open

Seat switch

Normal open

Seat reverse switch

Normal open

(1) Clutch Pedal
(2) Speed Control Pedal
(3) Mid-PTO  Gear Shift Lever

(4) Rear-PTO  Gear Shift Lever
(5) Seat Switch
(6) Seat Reverse Switch

Safety switch (clutch pedal switch, 
speed control pedal switch, mid-PTO 
shift lever switch and PTO shift lever 
switch) resistance (across switch 
terminal)

When switch is 
pushed

0 

Ω

When switch is free

Infinity ohms

(1) Seat Switch
(2) Connector

(3) Seat

(1) Seat Reverse Switch
(2) Connector

(3) Seat

KiSC issued 09, 2007 A

Summary of Contents for B2910

Page 1: ...W 0 R K HO P MAN U A L TRACTOR 82410 82710 82910...

Page 2: ...Servicing Under the heading General section comes general precautions check and maintenance and special tools Other section there are troubleshooting servicing specification lists checking and adjust...

Page 3: ...ry A WARNING Indicates a potentially hazardous situation which if not avoided could result in death or serious injury A CAUTION Indicates a potentially hazardous situation which if not avoided may res...

Page 4: ...rted solely by a jack Always support the machine by safety stands 6 Do not touch the rotating or hot parts while the engine is running 7 Never remove the radiator cap while the engine is running or im...

Page 5: ...es Keep electrolyte away from eyes hands and clothing If you spill electrolyte on yourself flush with water and get medical attention immediately 00000200070 DISPOSE OF FLUIDS PROPERLY 1 Do not pour f...

Page 6: ...decal part number is listed in the parts list 2 Part No TA040 4959 3 4 Part No 6C140 4744 1 3 Part No 6C040 4741 2 No fire 6 Part No TA040 4958 1 Do not touch hot surface like muffler etc 5 Part No 6C...

Page 7: ...ver start engine while standing on the ground 3 Part No 6C040 4741 2 No fire 4 Part No 6C140 4744 1 5 Part No 6C150 4743 1 6 Part No TA040 4958 1 Do not touch hot surface like muffler etc BEFORE DISMO...

Page 8: ...move the key 10 Part No 6C040 5559 1 SAFETY INSTRUCTIONS 8 Part No 32751 4958 1 Stay clear of engine fan and fanbelt DANGER EXPLOSIVE GASES Cigarettes flames or sparks could cause battery to explode A...

Page 9: ...t axle case 4 8 U S qts 4 0 Imp qts 3 9U S qts 3 3 Imp qts Overall length without 3P 2330 rnm 91 7 in Overall width 1175 mm 46 3 in Overall height with RaPS 1965 mm 77 4 in Dimensions Overall height t...

Page 10: ...S qts 4 0 Imp qts Transmission case 14 5 L 3 83 U S gals 3 19 Imp gals B271 0 Affected Serial No below 15496 14 0 L 3 70 U S gals 3 08Imp gals Front axle case 4 5 L 4 8 U S qts 4 0 Imp qts Overall len...

Page 11: ...m Range gear shift lever km h mph km h mph Low oto 6 6 oto 4 1 oto 5 0 oto 3 1 Forward Middle oto 8 6 oto 5 3 High Oto16 5 oto 10 2 oto 19 1 oto 11 9 Low oto 5 3 oto 3 3 oto 4 0 oto 2 5 Reverse Middle...

Page 12: ...82410 2WD 900 35 4 m l J j j T1 82410 4WD 835 32 9 Z 0 0 0 82710 82910 935 36 8 I en 0 OJ j l J 0 0 0 Z CJ en l J l J j o o s m z f a z J C J 3 3 82410 890 to 1064 35 0 to 41 9 82710 82910 1050 41 3...

Page 13: ......

Page 14: ...urs G 12 3 Check Points of Every 50 Hours G 16 4 Check Points of Every 100 Hours G 19 5 Check Points of Every 200 Hours G 22 6 Check Points of Every 300 Hours G 24 7 Check Points of Every 400 Hours G...

Page 15: ......

Page 16: ...ystem 4 Hydrostatic Transmission HST 5 3 Range of Speed B2710 B291 0 6 Bi speed Turn B241 0 Only 7 Cruise Control B2910 Only 8 Wet Disc Brake 9 Standard Mid PTO 10 Simultaneous Mounting of Both the Mi...

Page 17: ...ICATION 1 12270F00040 When contacting your local KUBOTA distributor always specify engine serial number tractor serial number and hour meter reading 1 Tractor Identification Plate 3 Engine Serial Numb...

Page 18: ...es against the direction from which a force is applied See the figure left side When inserting spring pins their splits must face the direction from which a force is applied See the figure left side T...

Page 19: ...90G00050 11790F00080 Do not let wiring contact dangerous part 1 Wiring Correct 3 Dangerous Part 2 Wiring Incorrect 4 Dangerous Part 11790G00060 A 11790F00100 B Securely insert grommet 1 Grommet A Corr...

Page 20: ...ive terminal posts When removing battery cables disconnect negative cable first When installing battery cables check for polarity and connect positive cable first Do not install any battery with capac...

Page 21: ...city of reserve power supply is exceeded 11790F00150 4 Connector 1 Fuse 2 Fusible Link 11790GOO140 11790F00160 A 8 For connector with lock push lock to separate A Push 11790GOO150 In separating connec...

Page 22: ...80 Make certain plastic cover is large enough to cover whole connector A 11790F00190 A 8 11790F00200 5 Handling of Circuit Tester A Correct 1 Cover B Incorrect A Correct B Incorrect 11790G00190 11790F...

Page 23: ...o 77 OF SAE20 crankcase 2 6Imp qts 3 6Imp qts 10W 30 or 10W 40 Above 25 C 77 OF SAE30 10W 30 or 10W 40 Affected Serial No below 15496 14 0 L 12 5 L 3 70 U S gals 14 5 L 4 Transmission 3 3 U S gals 3 0...

Page 24: ...n to to to to to to to to to to to to to to to 45 1 4 6 33 2 34 3 3 5 25 3 55 8 5 7 41 2 44 1 4 5 32 5 70 6 7 2 52 0 M12 62 8 6 4 46 3 77 5 7 9 57 2 62 8 6 4 46 3 103 10 5 76 0 12 mm 0 47 in to to to...

Page 25: ...ck i r i r i r i r i r i r i r i r i r i r i r i r i r G 18 13 Battery condition Check i r i r i r i r i r i r i r i r i r i r i r i r i r G 19 Primary Clean i r i r i r i r i r i r i r G 20 Air clean...

Page 26: ...hile sitting in the operator s seat 1 Check the HST pedal brake pedals and clutch pedal 2 Check the parking brake 3 Check the steering wheel Turning the key switch 1 Check the performance of the easy...

Page 27: ...oil capacity 2 6Imp qts 4 1 L 82710 4 3 U S qts 82910 3 6Imp qts 1 Drain Plug 2 Dipstick 3 Oil Inlet A Oil level is acceptable within this range 12271G00050 Replacing Engine Oil Filter Cartridge A CAU...

Page 28: ...low add oil prescribed level IMPORTANT Use only mUlti grade transmission oil Use of other oils may damage the transmission or hydraulic system Refer to LUBRICANTS AND FLUID See page G 8 Never work the...

Page 29: ...to the hydraulic system Use only a genuine KUBOTA filter or its equivalents 1 Hydraulic Oil Filter for HST 2 Hydraulic Oil Filter 12490G00090 12490F00140 Cleaning Transmission Oil Strainer 1 Clean the...

Page 30: ...pedal rod 2 length 3 After adjusting it measure total stroke 8 between stopper bolt 1 and clutch housing 4 4 If the measurement not within the factory specifications adjust it with the clutch pedal st...

Page 31: ...sing 1 Apply a grease to the following position as figures 12270F00170 12271 F00060 6 1 Grease Fitting HST Pedal 2 8attery Terminals 3 Grease Fitting Lifting Rod RH G 16 4 Grease Fitting Top Link 5 Kn...

Page 32: ...pedal to Foward to Reverse 3 Turn the key to START position 4 The engine must not chank Test 4 for safety switch on the rear PTO gear shift linkage 1 Shift the range gear shift lever to NEUTRAL positi...

Page 33: ...6 5 ft Ibs Rear wheel mounting 82710 108 to 125 N m 11 0 to 12 8 kgf m screws and nuts 82910 80 to 93 ft Ibs 1 Front Wheel Mounting Nuts 3 Cotter Setting 80lt and Nut 2 Rear Wheel Mounting Screws and...

Page 34: ...e tractor body 3 To slow charge the battery connect the battery positive terminal to the charger positive terminal and the negative to the negative then recharge in the standard fashion 4 A boost char...

Page 35: ...3 When replacing the air cleaner primary element 2 replace the secondary element 1 as well Once a year or after every six times of cleaning whichever comes first IMPORTANT The air cleaner uses a dry...

Page 36: ...2280F00190 1 Filter Bracket 2 Fuel Filter Bowl 3 O ring 4 Filter Element 5 O ring A Loosen B Tighten 12271G00310 1 12270F00070 12010F00220 1I1l11 1l 7 W Cleaning Fuel Filter Only B2710 Affected Serial...

Page 37: ...Screw 2 Tension Bolt A Check the belt tension B To Tighten 12271G00120 Checking Brake Pedal Free Travel A CAUTION Stop the engine and chock the wheels before checking brake pedal The difference betwe...

Page 38: ...l injection pump In addition particular care must be taken not to admit dust and dirt into the fuel pump 1 Fuel Hoses 12270G00210 Checking Radiator Hose and Hose Clamp Check to see if radiator hoses a...

Page 39: ...en tire beads at rear of tire hub height 7 Front distance should be 0 to 7 or 10 mm 0 to 0 28 or 0 39 in less than rear distance 8 If the measurement is not within the factory specifications adjust by...

Page 40: ...UDT fluid or SAE80 90 gear oil Refer to LUBRICANTS FUEL AND COOLANT See page G 8 1 Filling Plug with Dipstick A Oil level is acceptable within this 2 Drain Plug range Draining Front Axle Case Oil Bi...

Page 41: ...ring 3 a ring 12280G00250 Replacing Fuel Filter Element Only 82710 Affected Serial No below 15496 1 The fuel filter element should be replaced every 400 hours See page G 21 1 a ring 3 Filter Bowl 2 El...

Page 42: ...drain the coolant 3 After all coolant is drained close the drain plug 4 Fill with clean water and cooling system cleaner 5 Follow directions of the cleaner instruction 6 After flushing fill with clean...

Page 43: ...At 760 mmHg pressure atmospheric A higher boiling point is obtained by using a radiator pressure cap which permits the development of pressure within the cooling system NOTE The above date represent...

Page 44: ...from potential damage by fuses A blown fuse indicates that there is an overload or short somewhere in the electrical system 2 If any of the fuses should blow replace with a new one of the same capaci...

Page 45: ...ead lights Take the bulb out of the light body and replace with a new one 2 Other lights Detach the lens and replace the bulb Light Capacity Head lights 23W Taillight 8W Turn signal Hazard light 27W I...

Page 46: ...the cylinder OOOOOG00020 00000F00160 Piston Ring Tool Code No 07909 32121 Application Use exclusively for removing or installing the piston ring with ease OOOOOG00030 Diesel Engine Compression Tester...

Page 47: ...roP CD J 00000F00230 a I 11 II 00000F00240 00000G00090 Radiator Tester Code No 07909 31551 Application Use to check of radiator cap pressure and leaks from cooling system 00000F00260 OOOOOGOO130 00000...

Page 48: ...the oil clearance between crankshaft and bearing etc Measuring Green 0 025 to 0 076 mm 0 001 to 0 003 in range Red 0 051 to 0 152 mm 0 002 to 0 006 in Blue 0 102 to 0 229 mm 0 004 to 0 009 in OOOOOGOO...

Page 49: ...Copper C Flange 8teel D Hex nut with across the flat 27 mm 1 06 in E Injection pipe F PF 1 2 G 5 mm 0 20 in H 17 mm DIA 0 67 in DIA I 8 mm DIA 0 31 in DIA J 1 0 mm 0 039 in K 17 mm DIA 0 67 in OIA L...

Page 50: ...n H 5 mm 0 197 in I 6 7 to 7 0 mm dia 0 263 to 0 275 in dia J 20 mm dia 0 787 in dia K 12 5 to 12 8 mm dia 0 492 to 0 504 in dia L 8 9 to 9 1 mm 0 350 to 0 358 in C1 Chamfer 1 0 mm 0 039 in C2 Chamfer...

Page 51: ...7874 in a 6 3 Jlm 250 Jlin b 6 3 Jlm 250 Jlin 2 For Idle gear bushing A 196 mm 7 7165 in 8 26 mm 1 0236 in C 150 mm 5 9055 in D 25 8 to 25 9 mm 1 0157 to 1 0197 in E 28 8 to 28 9 mm 1 0157 to 1 0197 i...

Page 52: ...t A 130 mm 5 12 in B 72 mm 2 83 in C 1 57 rad 40 D 9 mm 0 35 in E 24 mm 0 95 in F 20 mm dia 0 79 in dia G 68 mm dia 2 68 in dia H 47 38 to 47 48 mm dia 1 865 to 1 869 in dia 11900G00451 F G 0 A _ _ 01...

Page 53: ...ode No 07916 51090 Application Use for removing the steering wheel without damaging the steering shaft 00000G00200 Pitman Arm Puller Code No 07909 39011 Application Use for pulling out pitman arm from...

Page 54: ...aptor Set for Flow Meter Code No 07916 54031 Application Use for testing the hydraulic system 00000F00380 VIJ 00000F00390 1 Flow Meter 1 Adaptor 52 2 Adaptor 53 3 Adaptor 54 4 Adaptor 61 5 Adaptor 62...

Page 55: ...Cl C1 s co f L t t CD t rg 1 U T e f 81 33 1 30 16 45 1 77 0 63 61 2 40 Pin 6 0 24 dis 15 0 59 length 12 0 47 6 0 24 12010F00400 12270G00310 G 12271 F001 00 Knuckle Spindle Bushing Replacement Tool Co...

Page 56: ...1 6 kgf cm2 Turf 23 psi 140 kPa Rear 33 12 5 15 4PR 1 4 kgf cm2 20 psi 160 kPa Front 21 x 8 00 10 4PR 1 6 kgf cm2 Bar 23 psi 140 kPa Rear 31 x 15 5 15 4PR 1 4 kgf cm2 20 psi 82710 82910 Type Tire size...

Page 57: ...6 50 10 Farm 23 x 8 50 12 Turf Tread 12271F00110 12271 F00120 4WD Model Models 82410 82410 82410 82410 Tires 7 12 Farm 21 x 8 00 10 Turf 23 x 8 50 12 Turf 23x 8 50 12 Ind Tread 835mm 940mm 870mm 870m...

Page 58: ...re fitting or adjusting a wheel tighten the bolts to the following torques then recheck after driving the tractor 200 m 200 yards and there after daily check service Remove the wheel hub and reinstal...

Page 59: ...d tighten the nut 4 with flat side of cotter as shown in figure 12490F00330 Models Tires Tread 82710 82910 12 4 16 Farm 1050 mm 41 3 in 12271F00210 1 Cotter 2 Bolt 82710 82910 12 4 x 16 Ind 1050 mm 41...

Page 60: ...aking a calcium chloride solution do not pour water over calcium chloride since this results in chemical reaction which will cause high temperature Instead add a small amount of calcium chloride to th...

Page 61: ...the air valve and pump air into the tire to the specified pressure Weight of Calcium Chloride Solution Filling 75 of Full Capacity of a Tire Fig 3 11790F00720 A B Tire sizes 11 2 16 12 4 16 Slush fre...

Page 62: ...res Lower link end max Front Rear loading weight W0 82410 2WD 900 mm 35 4 in 1064 mm 39 6 in 300 kg 660 Ibs 4WD 835 mm 32 9 in 82710 82910 935 mm 36 8 in 1050 mm 41 3 in 360 kg 800 Ibs Actual figures...

Page 63: ...1676 mm 66 in Max weight 190 kg 420 Ibs 250 kg 550 Ibs Sprayer Max tank capacity 190 L 50 U S gals 246 L 65 U S gals Front Blade Max cutting width 1524 mm 60 in 1676 mm 66 in Sub frame Necessary Neces...

Page 64: ...10 Valve Timing 1 M5 11 Flywheel 1 M6 12 Air Cleaner 1 M6 13 Muffler 1 M6 2 LUBRICATING SYSTEM 1 M7 1 Oil Pump 1 M8 2 Relief Valve 1 M8 3 Oil Filter Cartridge 1 M9 4 Oil Pressure Switch 1 M9 3 COOLIN...

Page 65: ......

Page 66: ...high durability tunnel type cylinder block in which the crank bearing component is a constructed body Furthermore liner less type allow effective cooling 1E3ss distortion and greater wear resistance T...

Page 67: ...Furthermore distortion of the cylinder head by heated exhaust gas is reduced because intake ports are arranged alternately The combustion chamber is of KUBOTA s exclusive E TVCS combustion chamber typ...

Page 68: ...h an oil gallery through which engine oil is fed to the crankpin portion and lubricates it 11790M10040 The piston has a slightly oval shape when cold in consideration of thermal expansion and a concav...

Page 69: ...6 Camshaft 11900F10010 7 Fuel Camshaft The camshaft 3 is made of special cast iron and the journal and cam sections are chilled to resist wear The journal sections are force lubricated 1 Cam Gear 3 Ca...

Page 70: ...inlet and exhaust valves All contact or sliding parts are quenched and tempered to resist wear 11900F10060 9 Intake and Exhaust Valve 11790F10130 10 Valve Timing 1 Rocker Arm 2 Lock Nut 3 Adjusting Sc...

Page 71: ...ear end plate On the circumference of the flywheel are stamped the top dead center 1TC mark for the 1st cylinder and four lines indicating every 0 087 rad 5 of crank angle from 0 175 rad 10 to 0 436 r...

Page 72: ...cting rods 15 idle gear 1 ENGINE 1 Rocker Arm 2 Oil Pressure Switch 3 Rocker Arm Shaft 4 Valve 5 Governor Shaft 6 Idle Gear 7 Crankshaft 8 Oil Pump 9 Oil Strainer 10 Relief Valve 11 Push Rod 12 Tappet...

Page 73: ...rs rotate the space between the lobes becomes larger creating a negative pressure which sucks in oil When the rotors rotate to position B the port to which the space leads is changed from inlet to out...

Page 74: ...pens and the oil flows from inlet to outlet bypassing the filter element 1 Filter Element 2 Bypass Valve 11900F10100 11900F10101 11900M10120 4 Oil Pressure Switch The oil pressure switch is mounted on...

Page 75: ...o the water temperature When the water temperature is high the thermostat opens to allow the water to flow from the cylinder head to the radiator When the water temperature is low the thermostat close...

Page 76: ...ostat 8 At high temperature higher than 82 C 180 OF When the temperature of cooling water exceeds 82 C 180 OF wax in the pellet turns liquid and expands Because the spindle 4 is fixed the pellet 3 is...

Page 77: ...radiator A B 1 Pressure Valve 2 Vacuum Valve 11790F10230 4 FUEL SYSTEM 1 Fuel Line 11790M10200 12280F10040 4 1 Fuel Tank 2 Fuel Filter 3 Injection Pump 4 Injection Pipe 5 Injection Nozzle 6 Fuel Overf...

Page 78: ...s through the dirt and impurities in the fuel are filtered out allowing only clean fuel to enter the interior of the filter element The fuel exits from the outlet of the filter bracket 1 and is sent t...

Page 79: ...diaphragm is pulled down a low vacuum or low pressure area is created above the diaphragm This causes atmospheric pressure in the fuel tank to force fuel into the fuel lift pump The inlet valve 1 open...

Page 80: ...of the control rack 3 the lengthwise slot 1 on the plunger 2 aligns with the feed hole 5 And the delivery chamber 4 is led to the feed hole during the entire stroke of the plunger The pressure in the...

Page 81: ...se flow thus keeping fuel always filled in the nozzle and pipe 2 Suck back function After completing the fuel delivery the delivery valve lowers and the relief plunger 4 end contacts the delivery valv...

Page 82: ...ozzle The injection pressure is 13 73 to 14 71 MPa 140 to 150 kgf cm2 1991 to 2133 psi and is adjusted with adjusting washers 3 1 Bar Filter 2 Nozzle Holder Body 3 Adjusting Washer 4 Nozzle Spring 5 P...

Page 83: ...the tension of governor springs 1 and 2 with the centrifugal force of flyweight 7 In addition idle limit spring 12 provides stable engine rotation During Overload At load increases the engine speed de...

Page 84: ...and Fuel Camshaft 1 822 3 Piston and Connecting Rod 1 827 4 Crankshaft 1 S30 SERVICING 1 831 1 Cylinder Head and Valves 1 831 2 Timing Gears Camshaft and Fuel Camshaft 1 837 3 Piston and Connecting R...

Page 85: ......

Page 86: ...Piston ring and cylinder worn Replace 1 829 Excessive valve clearance Adjust 1 817 Battery discharged Charge 9 85 Starter Does Not Starter malfunctioning Repair or replace 9 S11 Run Main switch malfu...

Page 87: ...ton 1 829 Valve stem and valve guide worn Replace 1 832 Oil leaking due to defective seals or packing Replace Fuel Mixed into Injection pump s plunger worn Replace pump 1 824 Lubricant Oil element or...

Page 88: ...ater insufficient Replenish G 8 Radiator net and radiator fin clogged with dust Clean Inside of radiator corroded Clean or replace G 2T Cooling water flow route corroded Clean or replace G 27 Radiator...

Page 89: ...835 in Width Exhaust 2 12 mm 0 0835 in Valve Seat Angle Intake 1 047 rad 60 Angle Exhaust 0 785 rad 45 Valve Face Angle Intake 1 047 rad 60 Angle Exhaust 0 785 rad 45 Valve Stem to Valve Guide Clearan...

Page 90: ...039 in Push Rod Alignement 0 25 mm 0 0098 in Tappet to Tappet Guide Clearance 0 020 to 0 062 mm 0 07 mm 0 00079 to 0 00244 in 0 0028 in Tappet 0 0 19 959 to 19 980 mm 0 78579 to 0 78661 in Tappet Gui...

Page 91: ...le Gear 2 V1305 V1505 Side Clearance 0 20 to 0 51 mm 0 9mm 0 0079 to 0 0200 in 0 0354 in Idle Gear Shaft to Gear Bushing Clearance 0 020 to 0 054 mm 0 10 mm 0 0008 to 0 0021 in 0 0039 in Idle Gear Sha...

Page 92: ...mm 0 0008 in Crankshaft Side Clearance 0 15toO 31 mm 0 50 mm 0 0059 to 0 0122 in 0 0197 in Crankpin to Crankpin Bearing Oil Clearance 0 029 to 0 091 mm 0 20 mm 0 00114 to 0 00358 in 0 0079 in Crankpi...

Page 93: ...n Cylinder V1305 1 0 76 500 to 76 519 mm 76 669 mm 3 01181 to 3 01255 in 3 01846 in 01105 1 0 78 500 to 78 519 mm 78 669 mm V1505 3 09055 to 3 09129 in 3 09720 in LUBRICATING SYSTEM Engine Oil Pressur...

Page 94: ...14 7 MPa 150 kgf cm2 2133 psi Delivery Valve Fuel Tightness 10 seconds or more for 5 seconds for pressure falling pressure falling from 14 7 to 13 7 MPa from 14 7 to from 150 to 140 kgf cm2 13 7 MPa...

Page 95: ...bearing nut 24 5 to 34 3 2 5 to 3 5 18 1 to 25 3 Rocker arm bracket nut M7 x 1 0 21 6 to 26 5 2 2 to 2 7 15 9 to 19 5 Cylinder head screw M10 x 1 25 63 7 to 68 6 6 5 to 7 0 47 0 to 50 6 Crankshaft sc...

Page 96: ...0 4 0 U S qts Coolant capacity 3 3 Imp qts with recovery rank 82710 4 5 L 82910 4 7 U S qts 4 0 Imp qts 3 0 L 82410 3 2 U S qts Engine oil capacity 2 6 Imp qts 82710 4 1 L 82910 4 3 U S qts 3 6 Imp qt...

Page 97: ...eping the engine at medium speed for a few minutes to prevents damage to the transmission Do not mix different blands oil together 12 5 L B241 0 3 30 U S gals 2 75 Imp gals Affeted Serial No below 154...

Page 98: ...l and Panel Under Cover 1 Open the meter panel 1 and disconnect the meter panel connector 2 and hour meter cable 3 Then remove the meter panel 2 Disconnect the combination switch connector 4 main swit...

Page 99: ...two wrenches Hold the fitting with a wrench turn the pipe nut with another wrench to avoid damage at fitting installed part 34 to 39 N m Delivery pipe nut for HST 3 5 to 4 0 kgf m 25 3 to 28 9 ft Ibs...

Page 100: ...he bearing holder 4 with propeller shaft and universal joint When reassembling Apply grease to the splines of the propeller shaft and universal joint When inserting the spring pins 2 face their splits...

Page 101: ...Ibs 12270S10180 Separating Front Axle Assembly 1 Disconnect the radiator hoses 1 2 Remove the muffler pipe 2 3 Hoist the engine by the chain at the engine hook 4 Remove the front axle frame mounting s...

Page 102: ...his test Variances in cylinder compression values should be under 10 0 0 2 84 to 3 24 MPa Factory spec 29 to 33 kgf cm2 Compression pressure 412 to 469 psi 2 26 MPa Allowable limit 23 kgf cm2 327 psi...

Page 103: ...he flywheel is just for No 1 cylinder There is no TC marking for the other cylinders No 1 piston comes to the T O C position when the TC marking is aligned with center of timing window on clutch housi...

Page 104: ...asket is not defective Sent compressed air into the pipes to blowout dust Then reassemble the pipes in the reverse order Cylinder head cover cap 6 9 to 8 8 N m 0 7 to 0 9 kgf m nut 5 1 to 6 5 ft Ibs T...

Page 105: ...ng Heat seal and copper gasket must be changed when the injection nozzle is removed for cleaning or for service 21 6 to 26 5 N m Tightening torque Rocker arm bracket nut 2 2 to 2 7 kgf m 15 9 to 19 5...

Page 106: ...ficient oil Tighten the cylinder head screws gradually screw in the order of a to n or r Tighten them uniformly or the head may deform in the long run Retighten the cylinder head screws after running...

Page 107: ...bination of valve and valve guide 1 Valve Spring Replacer 2 Valve Cap 3 Valve Spring Collet 4 Valve Spring Retainer 5 Valve Spring 6 Valve Stem Seal 7 Valve 12280810220 2 Timing Gears Camshaft and Fue...

Page 108: ...rings inside the gear case and the O ring on the crankshaft Apply a thin film of engine oil to the oil seal and install it noting the lip come off Length of the gear case mounting screws Refer to the...

Page 109: ...reduction of shims 0 05 mm 0 0020 in delays or advances the injection timing by approx 0 0087 rad 0 5 In disassembling and replacing be sure to use the same number of new shims with the same thickness...

Page 110: ...shaft Check the governor shaft for smooth rotation IMPORTANT When replacing the ball bearing of governor shaft securely fit the ball bearing 3 to the crankcase apply an adhesive Three Bond 1324B or eq...

Page 111: ...ORTANT Install the fork lever 2 5 to position it on the right side of the maximum output limit bolt 8 as shown in the figure 1900P10150 11900F10340 11900F10350 11900810160 Camshaft and Idle Gear 1 1 R...

Page 112: ...ontact surface Apply the adhesive also on the center of the flange as well as on the inner wall of each bolt hole Cut the nozzle of the liquid gasket Three Bond 12070 or equivalent container at its se...

Page 113: ...the cylinder face the mark on the connecting rod to the injection pump IMPORTANT Do not change the combination of cylinder and piston Make sure of the position of each piston by marking For example m...

Page 114: ...ring gap 11 Apply engine oil to the piston pin When installing the connecting rod to the piston immerse the piston in 80 C 176 OF oil for 10 to 15 minutes and insert the piston pin to the piston NOTE...

Page 115: ...r 5 to remove it When reassembling Fit the bearing case gasket 1 and the bearing case cover gasket 2 with correct directions Install the bearing case cover to position the casting mark UP on it upward...

Page 116: ...main bearing case 1 2 and 3 face the mark FLYWHEEL to the flywheel Install the thrust bearing with its oil groove facing outward Confirm that the main bearing case moves smoothly after tightening the...

Page 117: ...ect the valve seat face of the cylinder head with a valve seat cutter Code No 07909 33102 or valve seat grinder 6 Then correct the cylinder head surface with a surface grinder or replace the cylinder...

Page 118: ...I D of the valve guide to the specified dimension A 00000F10070 B Valve guide 1 0 Intake and exhaust Factory spec 7 010 to 7 025 mm 0 27599 to 0 27657 in 00000810051 Valve Seating 1 Coat the valve fac...

Page 119: ...ating apply a thin film of compound between the valve face and valve seat and fit them with valve lapping tool 4 Check the valve seating with prussian blue The valve seating surface should show good c...

Page 120: ...same length it is actually compressed in the engine 2 Read the compression load on the gauge 3 If the measurement is less than the allowable limit replace it 117 6 N 31 0mm Factory spec 12 0 kgf 31 0...

Page 121: ...sure the tappet 0 0 with an outside micrometer 2 Measure the 1 0 of the tappet guide bore with a cylinder gauge and calculate the oil clearance 3 If the oil clearance exceeds the allowable limit or th...

Page 122: ...00457 in gear and injection pump 0 15 mm gear Allowable limit 0 0059 in Factory spec 0 030 to 0 117 mm Backlash between 0 00118 to 0 00461 in injection pump gear and 0 15 mm governor gear Allowable l...

Page 123: ...actory spec 0 20 to 0 51 mm Idle gear 2 side 0 0079 to 0 0201 in clearance 0 9mm Allowable limit 0 0354 in 12270810430 Camshaft Side Clearance 1 Set a dial indicator with its tip on the camshaft 2 Mea...

Page 124: ...to 0 00358 in camshaft journal Allowable limit 0 15 mm 0 0059 in Camshaft journal 0 0 Factory spec 35 934 to 35 950 mm 1 41473 to 1 41535 in Cylinder block bore 1 0 Factory spec 36 000 to 36 025 mm 1...

Page 125: ...lowable limit replace the piston Factory spec 22 000 to 22 013 mm 0 86614 to 0 86665 in Piston pin bore 1 0 22 05 mm Allowable limit 0 8681 in 00000810211 Oil Clearance between Piston Pin and Small En...

Page 126: ...4 0 mm dia 0 157 in dia drill NOTE Be sure to chamfer the oil hole circumference with an oil stone A When Removing B When Installing 1 Seam 2 Oil Hole A 00000F10280 00000F10740 00000810231 00000F1029...

Page 127: ...79 in piston ring and Factory 0 020 to 0 055 mm piston ring groove spec 0 00079 to 0 00217 in Oil ring Allowable 0 15 mm limit 0 0059 in 00000810251 Connecting Rod Alignment 1 Remove the crankpin bear...

Page 128: ...in Thrust bearing 2 02 19202 23971 02008 0 4 mm Thrust bearing 1 04 15521 23961 04008 0 016 in Thrust bearing 2 04 19202 23981 04008 Oversize dimensions of crankshaft journal 0 2mm O 4mm size 0 008 in...

Page 129: ...shaft while the connecting rod screws are tightened Factory spec 0 029 to 0 091 mm Oil clearance between 0 00114 to 0 00358 in crankpin and crankpin 0 20 mm bearing Allowable limit 0 0079 in Crankpin...

Page 130: ...rsize Bearing Code Number Marking 0 2mm Crankshaft bearing 1 16241 23911 020 US 0 008 in 02 0 4 mm Crankshaft bearing 1 16241 23921 040 US 0 016 in 04 Undersize dimensions of crankshaft journal 0 2mm...

Page 131: ...eplace it with an undersize one referring to the table and figure NOTE Be sure not to move the crankshaft while the bearing case screws are tightened Factory spec 0 034 to 0 095 mm Oil clearance betwe...

Page 132: ...he oversize dimension Refer to Correcting Cylinder 4 Visually check the cylinder wall for scratches If deep scratches are found the cylinder should be bored Refer to Correcting Cylinder 01105 V1505 Fa...

Page 133: ...ized cylinder liner 3 01181 to 3 01256 in 1 0 76 669 mm Allowable limit 3 0185 in Hone to 1 2 to 2 0 mR max Finishing Y Y Y 0 000047 to 0 0079 in R max 2 Replace the piston and piston rings with overs...

Page 134: ...pressure At rated 36 to 64 psi speed 147 kPa Allowable limit 1 5 kgf cm2 27 psi When reassembling After checking the engine oil pressure tighten the engine oil pressure switch to the specified torque...

Page 135: ...TING 00000F10620 Clearance between rotor and cover Deflection A Factory spec Factory spec 0 030 to 0 085 mm 0 0012 to 0 0033 in 00000810441 7to 9 mm 0 28 to 0 35 in 00000810450 R J J r m 1 d 00000F106...

Page 136: ...1 2 Remove the thermostat assembly 3 When reassembling Apply a liquid gasket Three Bond 1215 or equivalent only at the thermostat cover side of the gasket 2 1 Thermostat Cover 3 Thermostat Assembly 2...

Page 137: ...ally read the temperature when the valve opens and leaves the string 3 Continue heating and read the temperature when the valve opens approx 6 mm 0 236 in 4 If the measurement is not within the factor...

Page 138: ...not required for assembling Shims are available in thickness of 0 20 mm 0 0079 in 0 25 mm 0 0098 in and 0 30 mm 0 0118 in Combine these shims for adjustments Addition or reduction of shim 0 05 mm 0 0...

Page 139: ...Delivery Valve 1 Remove the engine stop solenoid 2 Remove the injection pipes and glow plugs 3 Set a pressure tester to the fuel injection pump 4 Turn the flywheel and raise the pressure to approx 14...

Page 140: ...ing condition is defective replace the nozzle piece a Good b Bad 00000 10500 00000F10690 Fuel Injection Pressure 1 Set the injection nozzle to a nozzle tester Code No 07909 31361 2 Slowly move the tes...

Page 141: ...ecure the nozzle retaining nut 7 with a vise 2 Remove the nozzle holder 1 and take out parts inside When reassembling Assemble the nozzle in clean fuel oil Install the push rod 4 noting its direction...

Page 142: ...MECHANISM CONTENTS 1 FEATURES 2 M1 2 LINKAGE MECHANISM 2 M2 3 OPERATION 2 M3...

Page 143: ......

Page 144: ...ssion and is operated by stepping on the clutch pedal When the clutch pedal is depressed the clutch is disengaged and when it is released the clutch is engaged and power from the engine is transmitted...

Page 145: ...clutch 1 Engine Flywheel 2 Clutch Disc 3 Clutch Cover 4 Pressure Plate Engine torque is transmitted to the pressure plate assembly 13 via the flywheel 1 which is connected to the engine crankshaft The...

Page 146: ...ue to the frictional force among the flywheel 1 clutch disc 2 and pressure plate 4 1 Flywheel 2 Clutch Disc 3 Clutch Cover 4 Pressure Plate 5 Diaphragm Spring Clutch Disengaged When the clutch pedal i...

Page 147: ......

Page 148: ...ING SPECIFICATIONS 2 S2 TIGHTENING TORQUES 2 S2 CHECKING DISASSEMBLING AND SERVICING 2 S3 CHECKING AND ADJUSTING 2 S3 DISASSEMBLING AND ASSEMBLING 2 S4 1 SEPARATING ENGINE FROM CLUTCH HOUSING 2 S4 2 S...

Page 149: ......

Page 150: ...re ring of the pressure plate worn or broken Replace Pressure 2 88 plate assembly Chattering Grease or oil on clutch disc facing Replace 2 88 Clutch disc or pressure plate warped Replace 2 88 Clutch d...

Page 151: ...rence 0 5mm 0 020 in Bi speed Turn Cable Outer Distance A 18 mm Clutch Housing Side 0 71 in Bi speed Turn Cable Inner Distance B 10 mm Front Axle Case Side 0 39 in 12271820020 TIGHTENING TORQUES Tight...

Page 152: ...stop the engine and remove the key 1 Slightly depress the clutch pedal and measure stroke A at top of stopper bolt 1 2 If the measurement is not within the factory specifications loosen the lock nut a...

Page 153: ...ter changing the transmission oil Keeping the engine at medium speed for a few minutes to prevents damage to the transmission Do not mix different blands oil together 12 5 L 82410 3 30 U S gals 2 75 I...

Page 154: ...el and Panel Under Cover 1 Open the meter panel 1 and disconnect the meter panel connector 2 and hour meter cable 3 Then remove the meter panel 2 Disconnect the combination switch connector 4 main swi...

Page 155: ...se two wrenches Hold the fitting with a wrench turn the pipe nut with another wrench to avoid damage at fitting installed part 34 to 39 N m Delivery pipe nut for HST 3 5 to 4 0 kgf m 25 3 to 28 9 ft I...

Page 156: ...ove the bearing holder 4 with propeller shaft and universal joint When reassembling Apply grease to the splines of the propeller shaft and universal joint When inserting the spring pins 2 face their s...

Page 157: ...h mounting screw 2 4 to 2 8 kgf m 17 4 to 20 2 ft Ibs 12010820110 3 Clutch Cover 1 Clutch Disc 2 Clutch Assembly 2 SEPARATING CLUTCH ASSEMBLY Separating the Clutch Assembly 1 Remove the clutch assembl...

Page 158: ...ge Disc surface to rivet top Depth Allowable limit Allowable limit 2 0mm 0 079 in 0 3mm 0 012 in 12010520130 12010520140 Pressure Plate Flatness 1 Place a straightedge on the pressure plate and measur...

Page 159: ...2 CLUTCH 12010F20120 82410 82710 82910 WSM 12271 Checking Clutch Release Bearing 1 Check the clutch release bearing If surface is worn excessively or abnormal sounds occur replace it 12010820160 2 810...

Page 160: ...3 M11 1 6 Cruise Control Linkage 82910 Only 3 M12 1 7 Cruise Control Release System 82910 Only 3 M13 2 1 Hi Lo Gear Shift Section 82410 3 M14 2 2 Range Gear Shift Section 82710 82910 3 M14 3 1 Front...

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Page 162: ...Rear PTO Shift Section 6 Front Wheel Drive Section 3 Differential Gear Section 4 Mid PTO Shift Section 7 i 10 o r C I C I T W Cf a s 0 I 0 C I 0 CD 0 a 0 r I C I CD en C I 0 m 1 Hydrostatic Transmiss...

Page 163: ...r PTO Shift Section 6 Front Wheel Drive Section 3 Differential Gear Section 4 Mid PTO Shift Section 1 Hydrostatic Transmission Section 2 Range Gear Shift Section o y 0 C I m o y C I m C I r I II C I C...

Page 164: ...k and High Pressure 5 Neutral Valve Relief Valve 6 Fixed Displacement Piston 3 Turnion Shaft Motor Hydrostatic transmission is composed of variable displacement piston pump fixed displacement piston m...

Page 165: ...harge Pump 3 Charge Pump Case 4 Pump Shaft 5 Variable Swashplate 6 Thrust Collar 7 Retainer Plate 8 Piston 9 Cylinder Block Motor 10 Needle Bearing 11 Motor Shaft 12 Valve Plate Motor 13 Cylinder Bloc...

Page 166: ...led with oil Pistons ride against swashplates located in pump and motor In the pump as the cylinder rotates pistons move across the sloping face of swashplate and slide in or out of their cylinder bor...

Page 167: ...sure Oil 12490F30040 OiICOOler The pump and motor are joined in a closed hydraulic loop and most of oil circulates within the main oil circuit A little oil lubricates and oozes out from the clearance...

Page 168: ...valve in the high pressure side is closed and it pushes and opens the another one When excessively high pressure is built up in one line the high pressure relief valve located in this line is open and...

Page 169: ...t __ tliWl Oil Filter Cartridge for HST C lPower 82410 Steerin Hydraulic Pump 9 8 Umin 2 6 U S gal min 2 2 Imp gal min 82710 82910 11 7 Umin J 2 9 U S gal min 2 6 Imp gal min High Pressure Oil Low Pre...

Page 170: ...al min 2 6 Imp gal min High Pressure Oil Low Pressure Oil 12490F30050 OilCOOler When the speed control pedal is stepped on and in forward the variable swashplate is tilted as shown in figure above As...

Page 171: ...ssure Oil 12490F30060 OilCOOler When the speed control pedal is stepped on and in reverse the variable swashplateis tilted as shown in figure above As the pump cylinder block rotates with the input sh...

Page 172: ...l pedal restricts the movement of the linkage to prevent abrupt operation or reversing 12270M30090 1 Speed Control Rod Assembly 4 Spring 2 Damper 5 Neutral Holder 3 Speed Control Pedal The speed contr...

Page 173: ...speed comes down to the setting 12271 F3001 0 1 Grip 2 Cruise Control Lever 3 Lever Pin 4 Cruise Control Arm Tilt the cruise control lever 2 to the right and the lever pin 3 is activated to lift the c...

Page 174: ...o neutral automatically when brake pedals are depressed Cruise control lever 1 is set with plate 2 friction disc 3 by the cruise control shaft 4 release arm 5 and spring 6 When brake pedals are depres...

Page 175: ...Shifter Gear 4 Spiral Bevel Pinion Shaf 12490F30090 12271M300BO 2 2 Range Gear Shift Section 82710 82910 12270M30100 Three kinds of power flow from 4th shaft to spiral bevel pinion shaft are selected...

Page 176: ...rive the front wheels 1 20T Shift Gear 3 Spiral Bevel Pinion Shaft 2 13T Gear 4 Front Wheel Drive Shaft 12271M30090 3 2 Front Wheel Drive Section 82710 82910 2 wheel drive or 4 wheel drive is selected...

Page 177: ...t 1 14T Gear 2 27T Gear 3 5 3rd Shaft 6 Coupling 7 5th Shaft with 11T 2nd Gear Shaft with 13T Gear 4 17T Shifter Gear Gear 8 24T Gear 9 Rear PTO Shaft 10 12271M30100 2 Mid PTO Section 1 HST Pump Shaft...

Page 178: ...tractor turns the road resistance to the inside tire increases as if braking is applied to that side only In other words if one of tires slows down revolution difference is generated in the differenti...

Page 179: ...for this drawback the differential lock restricts the differential action and causes both rear axles to rotate as a unit When the differential lock pedal is stepped on it causes the differential lock...

Page 180: ...NG 3 811 2 DISASSEMBLING CLUTCH HOUSING 3 816 3 SEPARATING CENTER FRAME AND TRANSMISSION CASE 3 817 4 DISASSEMBLING TRANSMISSION CASE 3 823 1 Hydrostatic Transmission 3 823 2 Transmission Case 3 825 5...

Page 181: ......

Page 182: ...f pressure High above maximum allowable limit Not turn IRepair or replace I Low IFill to proper level I Defective Repair or replace I Low below minimum allowable limit I Replace I Oil filter cartridge...

Page 183: ...dal to speed control lever assy Good Adjust neutral t adjuster Low below minimum allowable limit High above maximum allowable limit High above maximum allowable limit Defective Repair or replace Syste...

Page 184: ...place 3 S24 S25 DIFFERENTIAL CASE SECTION Excessive or Improper backlash between spiral bevel pinion Adjust 3 S35 Unusual Noise at All and bevel gear Time Improper backlash between differential pinion...

Page 185: ...to 22 000 mm 0 8656 to 0 8661 in 13T Gear 1 0 30 007 to 30 021 mm 1 1026 to 1 1032 in Needle 0 0 3 994 to 4 000 mm 0 1572 to 0 1575 in Spiral Bevel Pinion Side Clearance Less than 0 15 mm Less than 0...

Page 186: ...ston to Bore HST Clearance 0 02 mm 0 04 mm 0 0008 in 0 0016 in Piston Slipper HST Thickness 3 00 mm 2 90 mm 0 118 in 0 1142 in Bi speed Turn Cable Outer Distance A 18mm Clutch Housing Side 0 71 in Bi...

Page 187: ...nut Clutch housing rear cover mounting screw 17 7 to 20 6 1 8 to 2 1 13 0 to 15 2 Speed control rod screw 39 2 to 44 1 4 0 to 4 5 28 9 to 32 5 3 point hitch delivery pipe joint bolt 34 0 to 39 0 3 5 t...

Page 188: ...ift the rear of the tractor so that the rear wheels are off the ground and run the engine at low idling and drive only rear wheels 3 Slightly loosen the neutral adjuster setting screw 1 4 Rotate the n...

Page 189: ...hold the HST pedal in place Adjusting Cruise Control Release Linkage Adjust the brake pedals play first Then adjust the HST release rod 8 turnbuckle to allow no gap between the release levers 1 9 and...

Page 190: ...A 3 Change the range gear shift lever to High position 4 Start the engine and run it at the maximum speed 5 Depress the speed control pedal forward and read the high pressure gauge to measure the forw...

Page 191: ...Disconnect the brake rod one side 3 Lift the rear of tractor one side 4 Set the engine speed to 1500 rpm 5 Shift the range gear shift lever to Hi position 6 Move the HST pedal from the forward to the...

Page 192: ...UEL AND COOLANT See page G 8 Never work the tractor immediately after changing the transmission oil Keeping the engine at medium speed for a few minutes to prevents damage to the transmission Do not m...

Page 193: ...anel and Panel Under Cover 1 Open the meter panel 1 and disconnect the meter panel connector 2 and hour meter cable 3 Then remove the meter panel 2 Disconnect the combination switch connector 4 main s...

Page 194: ...asket Three Bond 1215 or equivalent to both surface of the engine stop solenoid 8 34 to 39 N m Delivery pipe nut for HST 3 5 to 4 0 kgf m 25 3 to 28 9 ft Ibs Tightening torque 50 to 58 N m Oil cooler...

Page 195: ...move the bearing holder 4 with propeller shaft and universal joint When reassembling Apply grease to the splines of the propeller shaft and universal joint When inserting the spring pins 2 face their...

Page 196: ...Ibs 1 Power Steering Delivery Pipe 2 Power Steering Return Pipe 3 Power Steering Assembly 4 Seat Under Cover 5 Rubber Mat 12270830090 Separating the Engine from Clutch Housing 1 Disconnect the three...

Page 197: ...Release Bearing 4 Set Spring 1 Clutch Rod 2 Clutch Release Fork 12010P30140 2 DISASSEMBLING CLUTCH HOUSING Clutch Rod and Clutch Release Fork 1 Remove the external snap ring at the end of clutch rod 2...

Page 198: ...harness of tail lamps 2 Remove the ROPS frame top 3 3 Remove the lower link 1 and the collar from the 3 point hitch shaft 2 4 Remove the both sides reflectors 6 with frame 5 Remove the both sides fend...

Page 199: ...nd panel under cover 10 Remove the fuel tank frame set screws and fuel tank stay 11 Remove the clutch and brake springs 82410 only 12 Lift up the fuel tank frame and then remove the steps 13 Disconnec...

Page 200: ...5 Speed Control Rod Screw 6 Cruise Control Assembly 12271830110 Bi speed Turn Cable 1 Remove the spring lock pin 1 and loosen the lock nuts 2 and then remove the bi speed turn cable 3 When reassemblin...

Page 201: ...the HST safety switch holder with neutral rod 3 82710 Affected Serial No above 50101 4 Disconnect the HST delivery pipe 4 When reassembling IMPORTANT When HST safety switch 5 has been removed be sure...

Page 202: ...ove the spring holder 5 4 Separate the HST from transmission case When reassembling Apply liquid gasket Three Bond 1208D or equivalent to joint face of the HST and transmission case When inserting the...

Page 203: ...w 28 9 to 32 5 ft Ibs 1 Front Wheel Drive Lever 2 Differential Lock Pedal Support 3 Top Link 8racket LH 4 Hydraulic Cylinder 5 Rear Axle Case 6 Drawber Frame 12270 30210 4 12270P30190 Separating Mid P...

Page 204: ...er lock screw 1 8 to 2 1 kgf m 13 0 to 15 2 ft Ibs Tightening torque 23 6 to 27 4 N m Neutral holder mounting 2 4 to 2 8 kgf m screw 17 4 to 20 2ft lbs 1 Neutral Holder 2 Neutral Holder Arm 3 Neutral...

Page 205: ...IMPORTANT Valve plates 3 4 may stick to the center section but they are not fixed Take care not to drop them Valve plates are not interchangeable Valve plate of pump has two notches and the one of mo...

Page 206: ...el Pinion Shaft 1 Remove the spiral bevel pinion shaft 2 with 15T 29T 82410 or 16T 27T 32T shifter gear 3 13T 82410 or 14T gear 4 and shift fork 5 2 Remove the 4th gear shaft 1 When reassembling When...

Page 207: ...Remove the 2nd gear shaft 1 with bearings 2 Remove the 3rd shaft assembly 2 and shift fork 3 with shift rod 3 Remove the middle shaft 4 and 19T gear 5 with bearing When reassembling When assembling th...

Page 208: ...270 30280 2270P30250 5 DISASSEMBLING DIFFERENTIAL GEAR CASE PTa Shaft 1 Remove the PTa cover mounting screws and remove the PTa cover assembly When reassembling Apply liquid gasket Three Bond 12080 or...

Page 209: ...s equivalent to the spiral bevel gear UBS screws 1 Spiral Bevel Gear UBS Screw 2 Spiral Bevel Gear 3 Differential Case 11900830500 11900F30350 Differential Side Gear and Differential Pinion 1 Put part...

Page 210: ...rease to the inner parts of ball coupling and splines of ball coupling inner When replacing the ball coupling assembly install the ball coupling inner 1 with balls so that its ball position inside of...

Page 211: ...o not interchange pistons between pump and motor cylinder block Pistons and cylinder blocks are matched Factory spec 3 00 mm 0 118 in Thickness of slipper 2 90 mm Allowable limit 0 114 in Cylinder Blo...

Page 212: ...1 with grease Oil Seals and Bearings for Shaft 1 Remove the internal snap ring and check the oil seals 1 for damage 2 Check the bearings 2 for wear 3 If the bearings are worn replace NOTE After check...

Page 213: ...mission Case Charge Relief Valve 1 Check the spring 2 for breakage and wear 2 If it unusual replace 1 Valve Plug 3 Valve Poppet 2 Spring 12010830500 11790F30070 2010P30560 Checking Bearing 1 Hold the...

Page 214: ...y spec 30 007 to 30 021 mm 1 1026 to 1 1032 in Needle 0 0 Factory spec 3 994 to 4 000 mm 0 1572 to 0 1575 in 12270S30300 Clearance between Differential Case Spiral Bevel Gear and Differential Side Gea...

Page 215: ...in Differential pinion shaft Factory spec 15 973 to 15 984 mm a D 0 6289 to 0 6293 in 11900830530 Backlash between Differential Pinion and Differential Side Gear 1 Secure the differential case with a...

Page 216: ...r 5 Measure the backlash by fixing the spiral bevel pinion 4 and moving bevel gear 2 by hand 6 If the backlash exceeds the factory specifications adjust with the shims 1 5 at bearing holder 6 and diff...

Page 217: ......

Page 218: ...MECHANISM CONTENTS 1 FEATURES 4 M1...

Page 219: ......

Page 220: ...emifloating type with ball bearings 2 between the rear axle 4 and the rear axle case 3 which supports the rear wheel load as well as transmitting power to the rear wheels 5 Spur Gear 6 Differential Ge...

Page 221: ......

Page 222: ...iFiCATIONS 4 81 TIGHTENING TORQUES 4 81 CHECKING DISASSEMBLING 4 82 1 SEPARATING REAR AXLE CASE 4 82 1 Draining Transmission Fluid 4 82 2 8eparating Rear Axle Case from Differential Gear Case 4 84 2 D...

Page 223: ......

Page 224: ...Tightening torques of screws bolts and nuts on the table below are especially specified For general use screws bolts and nuts See page G 9 Item N m kgf m ft Ibs B2410 Rear wheel hub mounting nut 108...

Page 225: ...t and check the oil level again if low add oil prescribed level IMPORTANT Use only multi grade transmission oil Use of other oils may damage the transmission or hydraulic system Refer to LUBRICANTS FU...

Page 226: ...en reassembling Rear wheel cotter setting 123 to 147 N m 12 6 to 15 0 kgf m bolt and nut 91 to 108 ft Ibs Tightening torque 108 to 125 N m Rear wheel hub mounting 11 0 to 12 8 kgf m nut 80 to 93 ft Ib...

Page 227: ...Gear Case Rear Axle Case Bi speed Turn Type Only 1 Disconnect the brake rod 1 2 Loosen the lock nuts and remove the bi speed turn cable 4 from cable support 5 3 Remove the spring 2 9 and lever holdin...

Page 228: ...g 39 2 to 44 1 N m Tightening torque 4 0 to 4 5 kgf m screw 28 9 to 32 5 ft Ibs 1 Brake Rod 2 Sub Frame 3 Differential Lock Rod 4 Rear Axle Case 12271540050 12490540040 5 Bearing 6 External Snap Ring...

Page 229: ......

Page 230: ...MECHANISM CONTENTS 1 FEATURES 5 M1 2 OPERATION 5 M2...

Page 231: ......

Page 232: ...by the brake pedals through the mechanical linkages and provide stable braking and require little adjustment Features of Wet Disc Brakes 1 Reduced disc wear Although wet discs are worn by approx seve...

Page 233: ...shaft 6 is braked by the frictional force generated by the cam plate 1 and brake disc 3 1 Cam Plate 2 Friction Plate 3 Brake Disc The brake body is incorporated in the rear axle case 4 filled with tra...

Page 234: ...5 81 TIGHTENING TORQUES 5 82 CHECKING DISASSEMBLING AND SERViCiNG 5 82 CHECKING ADJU8TING AND 8ERVICING 5 82 1 BRAKE PEDAL 5 82 DISASSEMBLING AND AS8EMBLING 5 S4 1 8EPARATING REAR AXLE CA8E WITH BRAKE...

Page 235: ......

Page 236: ...mproper Change G 8 4 S2 12271850010 SERVICING SPECIFICATIONS Item Factory Specification Allowable Limit Brake Pedal Free Travel 30 to 40 mm 1 18 to 1 57 in Pedal Shaft to Pedal Shaft Bush Clearance ot...

Page 237: ...G 1 BRAKE PEDAL 12010F50030 Adjusting Brake Pedal Free Travel A CAUTION Stop the engine and chock the wheels before checking brake pedal The difference between the right and left pedal plays must be l...

Page 238: ...ake pedal shaft When inserting the spring pin face its split in the direction at right angle to the brake pedal shaft 12490850050 Clearance between Brake Pedal Shaft and Center Frame Bush 1 Measure th...

Page 239: ...Spring 2 Differential Lock Shift Fork 3 Differential Lock Clutch 4 57T Gear 7 12490F40030 2 DISASSEMBLING BRAKE ASSEMBLY Differential Lock Shift Fork Differential Lock Clutch Right Side Only 57T Gear...

Page 240: ...ring 1 and remove the brake discs and friction plate 2 Remove the cam plate and balls 3 Remove the external snap ring and pull out the brake cam lever When reassembling Install the brake discs with t...

Page 241: ...If the measurement is less than the allowable limit replace the cam plate and balls 3 Inspect the ball holes of cam plate for uneven wear 4 If the uneven wear is found replace it Factory spec 22 89 to...

Page 242: ...MECHANISM CONTENTS 1 STRUCTURE 6 M1 1 2 Wheel Drive Model 6 M1 2 4 Wheel Drive Model 6 M2 3 Bi speed Turn Type 6 M3 2 FRONT WHEEL ALIGNMENT 6 M6...

Page 243: ......

Page 244: ...n 2 so that steering operation is stable even on an uneven ground encountered in a farm fields 1 Front Axle 2 Center Pin 3 Knuckle Arm The front axle of the 2WD model is constructed as shown above the...

Page 245: ...l gear 12 and to the differential side gear 20 The power through the differential side gear is transmitted to the differential yoke shaft 7 15 and to the bevel gear shaft 21 through the bevel gears 4...

Page 246: ...Bi speed Turn Change Cable 4 Shift Rod 5 Shift Lever 6 Shift Lever Fulcrum 7 Change Fork 8 Change Lever 9 Shift Cam 10 Bi speed Turn Case 11 Shift Roller Shaft 12 Spring 13 Bi speed Turn Shift Fork 1...

Page 247: ...ate 8 Bi speed Turn Coupling 9 Bi speed Turn Clutch Drum 10 18T Gear 11 Spiral Bevel Pinion Shaft 12 Shift Rod 13 Shift Roller Shaft 14 Shift Roller 15 Shift Cam 16 Shift Lever 17 Change Fork 18 Chang...

Page 248: ...O C 3 0 12271F60050 Standard 4WD The bi speed turn change lever is shifted to the OFF position The shift cam 1 is free to turn so that the shift rod 2 and shift fork 4 are remained in standard 4WD pos...

Page 249: ...ght left and forward a 00000F60010 ICamber I 035 rad 12270M60020 a 00000F60020 Kingpin Angle The kingpin is tilted from the vertical as viewed from the front This angle is called kingpin angle a As wi...

Page 250: ...front wheels is smaller than that between the heels It is called toe in The front wheels tend to roll outward due to the camber but toe in offsets it and ensures parallel rolling of the front wheels A...

Page 251: ......

Page 252: ...ING AND ASSEMBLING 2WD MODEL 6 88 DI8AS8EMBLING AND ASSEMBLING 4WD MODEL 6 810 1 Separating Front Axle Assembly 6 810 2 Disassembling Front Axle Assembly 6 812 DISAS8EMBLING AND AS8EMBLING BI 8PEED TU...

Page 253: ......

Page 254: ...s in transmission broken Replace 3 826 Front differential gear broken Replace 6 816 Coupling displaced Reassembling Noise Gear backlash excessive Adjust or replace 6 814 Oil insufficient Replenish 6 8...

Page 255: ...9 in Center Pin to Pin Support Clearance 0 05 to 0 25 mm 0 70 mm 0 0020 to 0 0098 in 0 0276 in Center Pin 0 0 24 90 to 25 00 mm 0 9803 to 0 9842 in Pin Support 1 0 25 05 to 25 15 mm 0 9862 to 0 9901 i...

Page 256: ...ifferential Pinion Clearance 0 038 to 0 068 mm 0 17 mm 0 00150 to 0 00268 in 0 0067 in Pinion Shaft 0 0 9 972 to 9 987 mm 0 39260 to 0 39312 in Differential Pinion 1 0 10 025 to 10 040 mm 0 39469 to 0...

Page 257: ...04 in Bi speed Turn Spring Short Free Length 32 5 mm 28 5 mm 1 280 in 1 220 in Maximum Setting Load 1613 N 25 5 mm Load 1411 N Length 164 5 kgf 25 5 mm 25 5 mm 362 7 Ibs 1 00 in 143 9 kgf 25 5 mm 317...

Page 258: ...5 Front axle bracket mounting screw 200 to 230 20 4 to 23 5 147 5 to 169 6 Bevel gear case mounting screw 77 5 to 90 1 7 9 to 9 2 57 1 to 66 5 Knuckle arm mounting screw 103 0 to 117 7 10 5 to 12 0 76...

Page 259: ...Front B Wheel to Wheel Distance at rear 12271860080 Toe in Adjusting 1 Loosen the lock nuts 1 2 Turn the tie rod 2 until to be factory specification 3 Tighten the lock nuts 1 49 0 to 98 1 N Front axl...

Page 260: ...ft and right tires turn simultaneously in the same direction 4 If both tires do not turn in the same direction adjust length A of the bi speed turn shift rod while being careful not to change the stee...

Page 261: ...ening torque 118 to 157 N m Slotted nut 12 to 16 kgf m 86 8 to 115 7 ft Ibs 12271F60150 12271F60160 12271860110 S008177P331 Tie rod and Knuckle Arm 1 Pull out the cotter pins and loosen the slotted nu...

Page 262: ...he center pin 3 to forward 4 Separate the front axle from the front axle frame When reassembling After reassembling the center pin apply grease until it overflows from the end Less than 9 8 N m Slotte...

Page 263: ...in add oil to prescribed level Use KUBOTA SUPER UDT fluid or SAE 80 90 gear oil Refer to LUBRICNATS FUEL AND COOLANT See page G 8 3 7 L 82410 3 9 U S qts Front axle case oil 3 3 Imp qts capacity 82710...

Page 264: ...ront Axle Assembly 1 Lift up the front side of tractor and place the disassembling stand under the front axle frame 2 Remove the front wheels 3 Place the disassembling stand under the front axle 4 Rem...

Page 265: ...figure 1 Front Axle Bracket Front 3 Tie rod 2 Front Axle Bracket Rear 11790F60050 12270860110 Bevel Gear Case and Front Gear Case 1 Remove the bevel gear case mounting screws 2 Remove the bevel gear...

Page 266: ...Three Bond 12080 or equivalent to joint face of the axle flange 2 and front gear case 1 after eliminate the water oil and stuck liquid gasket Tighten the axle flange mounting screws and nuts diagonal...

Page 267: ...s 0 8 mm 0 031 in 1 2 mm 0 047 in 1 0 mm 0 039 in 1 Internal Snap Ring 2 Shim 3 Ball Bearing 4 Bevel Gear 12010860150 Axle 1 Remove the bearing 1 2 Take out the bevel gear 2 3 Take out the collar 3 4...

Page 268: ...embling Apply gear oil to the taper roller bearings 9 and install them correctly noting their direction Replace the lock nut 10 and oil seal 1 with new ones After tighten the lock nut 10 to the specif...

Page 269: ...he parts to know their original position When reassembling Apply molybdenum disulfide Three Bond 1901 or equivalent to the inner circumferential surface of the differential side gears 11 and different...

Page 270: ...and filling plug 1 to drain the oil 3 Remove the right and left breather plugs 4 After draining reinstall the drain plugs 2 5 Fill with new oil up to the upper notch on the dipstick 6 After filling re...

Page 271: ...om the knuckle arm IMPORTANT After tightening the slotted nut to the specified torque install the cotter pin as shown in the figure left 17 7 to 34 3 N m Tightening torque Slotted nut 1 8 to 3 5 kgf m...

Page 272: ...0050 1 Bi speed Turn Rod 2 Tie rod 3 Front Gear Case 4 Bevel Gear Case 5 Front Axle Case 12271860230 Separation of Bi speed Turn Case 1 Remove the bi speed turn case mounting screws and separate the b...

Page 273: ...nstalling the shift cam be sure to align the marks on the shift cam and shift lever 12271F60220 SOOB177P336 2 1 Shift Lever 2 Case Cover 3 Collar 4 External Snap Ring 5 Shift Cam 6 Bi speed Turn Case...

Page 274: ...177P337 Separation of Bi speed Turn Gear Case 1 Remove the bi speed turn gear case mounting screws 1 2 Separate the bi speed turn gear case 2 from the bearing holder 3 When reassembling Apply liquid g...

Page 275: ...ner ring Replace the staking nut with a new one and after checking the turning torque of staking nut 1 be sure to stake it After installing the gear shaft 14 with the bearing reinstall the bi speed tu...

Page 276: ...replace Factory spec 0 040 to 0 105 mm Clearance between 0 0016 to 0 0041 in knuckle shaft and bushing Allowable limit 0 50 mm 0 0197 in Knuckle shaft 0 0 Factory spec 24 948 to 24 980 mm 0 9822 to 0...

Page 277: ...et a dial gauge lever type on a tooth of the differential pinion 2 Fix the differential side gear and move the differential pinion to measure the backlash 3 If the measurement exceeds the factory spec...

Page 278: ...spline of its shaft factory specification will be 0 0571 to 0 1714 mm 0 00225 to 0 00675 in Thickness of adjusting collars 3 4 3 4 mm 0 134 in 4 1 mm 0 161 in 3 6 mm 0 142 in 4 2 mm 0 165 in 3 8 mm 0...

Page 279: ...8 in Front axle case boss Factory spec 49 950 to 49 975 mm front 0 0 1 9665 to 1 9675 in Bracket bushing front Factory spec 50 10 to 50 23 mm 1 0 1 9722 to 1 9774 in Clearance between front Factory sp...

Page 280: ...325 5 to 361 7 ft Ibs Reference Thickness of shims 1 0 mm 0 039 in 1 5 mm 0 059 in When the dynamic friction torque of bi speed turn clutch is measured on the gear shaft 7 its factory specifications a...

Page 281: ...164 5 kgf 25 5 mm Working load of bi speed 362 7 Ibs 1 00 in turn spring short Load 1411 N 25 5 mm Allowable limit 143 9 kgf 25 5 mm 317 4 Ibs 1 00 in Load 86 3 N 35 0 mm Factory spec 8 8 kgf 35 0 mm...

Page 282: ...ory specifications adjust with retightening the staking nut 4 Stick the strip of fuse on the spiral bevel gear 1 with grease 5 Carefully rotate the spiral bevel pinion shaft 2 on full turn 6 Remove th...

Page 283: ......

Page 284: ...MECHANISM CONTENTS 1 HYDRAULIC PUMP 7 M1 2 HYDRAULIC CIRCUIT FOR POWER STEERING SYSTEM 7 M2 3 POWER STEERING BODy 7 M3 4 OIL FLOW 7 M4...

Page 285: ......

Page 286: ...n gear 2 that are in mesh Hydraulic pump is driven by the fuel camshaft Maximum displacement is as follows Displacement Engine speed Condition 9 8 Umin 82410 2 6 U S gal min 2 2 Imp gal min At 2600 rp...

Page 287: ...ual steering system The input shaft stub shaft 10 and the worm shaft 3 which can separate from each other are jointed together via a torsion bar 9 One end of the torsion bar is fixed by a pin with the...

Page 288: ...020 1 Sector Gear Shaft 2 Rack Piston 3 Worm Shaft 4 Gear Case 5 a ring 6 Seal Ring 7 Plug 8 Relief Valve 9 Valve Housing 10 Torsion Bar 11 Pin 12 Oil Seal 13 Bearing 14 Stub Shaft 7 M3 15 Sleeve 16 S...

Page 289: ...Port L Cylinder L Port R Cylinder R Port When the steering wheel is not turned there is no relative displacement between stub shaft 7 and worm shaft 3 And spool part of the stub shaft 7 and sleeve 5 a...

Page 290: ...s that the torsion bar 4 gets under torsional force and that stub shaft 7 and the worm shaft 3 start turning in a relative displacement the spool part of the stub shaft 7 turns counterclockwise with r...

Page 291: ...r right turning except for directions of oil flow from 12270M700S0 Manual Operation When Engine Stops or Hydraulic Circuit Troubles Even when the engine stops or hydraulic circuit malfunctions thus le...

Page 292: ...ricted The relief valve setting pressure can be adjusted by turning the adjusting screw 1 1 Adjusting Screw 3 Spring 2 Lock Nut This power steering is equipped with a direct acting relief valve to res...

Page 293: ......

Page 294: ...DISASSEMBLING AND SERVICING 7 S4 1 HYDRAULIC PUMP 7 S4 CHECKING AND ADJUSTING 7 S4 DISASSEMBLING AND ASSEMBLING 7 S5 SERVICING 7 S6 2 POWER STEERING 7 S7 CHECKING 7 S7 DISASSEMBLING AND ASSEMBLING 7...

Page 295: ......

Page 296: ...g Replace 7 811 Valve housing and sleeve malfunctioning Replace 7 811 Seals in the steering gear box damaged Replace Backlash between sector gear shaft and rack Adjust 7 812 piston too small Air in th...

Page 297: ...l min at 11 3 to 12 3 B2410 MPa 8 3 Llmin 115 to 2 2 U S gal min 125 kgf cm2 1 8 Imp gal min 1636 to 1778 psi B2710 B2910 10 0 Llmin 2 6 U S gal min 2 2 Imp gal min Gear to Casing Clearance 0 15 mm 0...

Page 298: ...ox to Rack Piston Clearance 0 030 to 0 079 mm 0 14 mm 0 0012 to 0 0031 in 0 0055 in Gear Box Bore 1 0 61 000 to 61 030 mm 2 4016 to 2 4028 in Rack Piston 0 0 60 951 to 60 970 mm 2 3996 to 2 4004 in Ra...

Page 299: ...NT When using a flowmeter other than KUBOTA specified flowmeter Code No 07916 52792 be sure to use the instructions with that flowmeter In this hook up there is no relief valve Therefore while testing...

Page 300: ...Imp gal min at rated pressure spec 82710 10 0 Umin 82910 2 6 U S gal min 2 2 Imp gal min 12271870020 DISASSEMBLING AND ASSEMBLING 12270P70020 Removing Hydraulic Pump 1 Open the bonnet then remove the...

Page 301: ...r gauge 3 If the clearance exceeds the allowable limit replace the assembly 2270P70050 Clearance between tip of gear tooth and casing Allowable limit 0 15 mm 0 0059 in 12270870090 V 2010P80130 1900P80...

Page 302: ...the steering wheel to measure the operating force 4 If the measurement exceeds the factory specification check the suction line delivery line and the performance of hydraulic pump And then check the p...

Page 303: ...nting nut and remove the steering wheel with a steering wheel puller Code No 07916 51090 When reassembling Steering wheel mounting 29 4 to 49 0 N m Tightening torque 3 0 to 5 0 kgf m nut 21 7 to 36 2...

Page 304: ...he figure Reference 17 7 to 34 5 N m Tightening torque Slotted nut 1 8 to 3 5 kgf m 13 0 to 25 3 ft Ibs 11790F60050 1 Drag Link 2 Knuckle Arm 12270810170 Power Steering Assembly 1 Remove the seat unde...

Page 305: ...1 to 15 1 ft Ibs 1 Steering Column 12270870210 Pitman Arm 1 Remove the pitman arm mounting nut and remove the pitman arm with pitman arm puller Code No 07909 39011 When reassembling IMPORTANT Install...

Page 306: ...aces and thrust bearings 8 8 to 10 8 N m Tightening torque Plug 0 9 to 1 1 kgf m 6 5 to 8 0 ft Ibs 12271870040 Disassembling Valve Housing IMPORTANT Do not disassemble the relief valve needlessly sinc...

Page 307: ...Secure the rack piston assembly in a vise 2 Set a dial indicator with its finger on the worm shaft of the rack piston assembly 3 Move the worm shaft axially and measure the play 4 If the play exceeds...

Page 308: ...ONTENTS 1 HYDRAULIC CIRCUIT 8 M1 2 HYDRAULIC PUMP 8 M2 3 HYDRAULIC BLOCK TYPE OUTLET 8 M2 4 RELIEF VALVE 8 M3 5 POSITION CONTROL VALVE 8 M4 6 FEEDBACK LINKAGE FOR POSITION CONTROL 8 M7 7 HYDRAULIC CYL...

Page 309: ......

Page 310: ...e hydraulic system of these tractors are composed of a hydraulic pump hydraUlic block type outlet control valve hydraulic cylinder hydraulic oil filter and other components This system has the followi...

Page 311: ...ive Gear 4 Side Plate 12271MB0020 3 HYDRAULIC BLOCK TYPE OUTLET A To implement Inlet Max flow 22 4 Umin 6 4 U S gal min 5 4 Imp gal min No relief valve in the hydraulic block 8 From implement Outlet W...

Page 312: ...e inlet of the valve leads to the chamber via a clearance between the sliding portion of the guide and the seat 6 minimizing valve vibration with the damping effect of the chamber When the oil pressur...

Page 313: ...ion control valve is located under the hydraulic cylinder block 1 Poppet 2 2 Poppet 1 3 Plunger 4 Spool 5 Unload Poppet 12270F80040 82410 82710 82910 WSM 12271 1201OMB0050 P Pump Port C Cylinder Port...

Page 314: ...cylinder is forced out to the transmission case through the T2 port by the weight of the implement causing the implement to lower Oil forced into the control valve through the P port pushes open the...

Page 315: ...he hole diameter and pushes the plunger 8 to the left Then the passages 4 4 and 5 5 connect to each other and the oil between them return to the transmission case through the clearance between the val...

Page 316: ...ermined in proportion to the set position of the position control lever 4 1 Lift Arm RH 2 Feedback Rod 3 Control Lever Shaft When the position control lever 4 moved to rearward to litt the implement t...

Page 317: ...pushes out the piston 10 While the lift arm 5 is lowering oil in the hydraulic cylinder is discharged to the transmission case through the position control valve 6 by the weight of the implement At th...

Page 318: ...S4 CHECKING AND ADJUSTING 8 S4 DISASSEMBLING AND ASSEMBLING 8 S5 SERVICING 8 S6 2 HYDRAULIC CYLINDER ASSEMBLY AND HYDRAULIC BLOCK 8 S7 CHECKING AND ADJUSTING 8 S7 DISASSEMBLING AND ASSEMBLING 8 S9 1...

Page 319: ......

Page 320: ...broken Repair or Replace Suction pipe connecting hose loosen or Repair or Replace broken Suction pipe O ring broken Replace Insufficient transmission oil Refill G 8 Relief valve setting pressure too l...

Page 321: ...2710 B2910 23 0 L min 6 1 U S gal min 5 1 Imp gal min Gear to Casing Clearance 0 15 mm 0 0059 in Gear Shaft to Bushing Clearance 0 020 to 0 091 mm 0 12 mm 0 0008 to 0 0036 in 0 0047 in Gear Shaft 0 0...

Page 322: ...w are especially specified For general use screws bolts and nuts See page G 9 Item N m kgf m ft Ibs Delivery pipe nut for power steering 65 to 75 6 6 to 7 7 47 9 to 55 3 Hydraulic pump cover mounting...

Page 323: ...Install the adaptor 61 8 to the hydraulic pump for 3 point hitch 8 Reassemble the power steering delivery pipe 9 Reinstall the engine stop solenoid and accelerator rod 10 Connect the hydraulic test h...

Page 324: ...very Factory 3 5 Imp gal min at rated pressure spec 82710 Above 23 0 Umin 82910 6 1 U S gal min 5 1 Imp gal min 12271880030 DISASSEMBLING AND ASSEMBLING 12270P70020 Removing Hydraulic Pump 1 Open the...

Page 325: ...f the oil seal is defective worn or scratched replace it 1 Oil Seal 2 Internal Snap Ring 12010880080 Clearance between Tip of Gear Tooth and Casing 1 Measure the gear 0 0 with an outside micrometer 2...

Page 326: ...cable and pressure gauge to adaptor 58 4 Remove the feedback rod lock nut and spring 5 Start the engine and set at maximum speed 6 Move the hydraulic control lever all way up to operate the relief val...

Page 327: ...ion control lever 2 to the uppermost position 4 Move the lift arm 1 to the upper end by hand and measure the free play 5 If the measurement is not within the factory specifications adjust the free pla...

Page 328: ...r 82910 only 2 Remove the lowering speed adjusting knob and dipstick then remove the seat under cover 3 Remove the cruise control lever grip 82910 only lever guide 82910 only 4 Loosen the lock nuts an...

Page 329: ...ential case and the hydraulic cylinder Connecting plate mounting 39 2 to 44 1 N m 4 0 to 4 5 kgf m screw 28 9 to 32 5 ft Ibs Hydraulic cylinder mounting 39 2 to 44 1 N m Tightening torque 4 0 to 4 5 k...

Page 330: ...c Arm Shaft 5 Alignment Marks 3 Lift Arm LH 6 Alignment Marks 12010580180 Hydraulic Piston 1 Inject the compressed air into the hydraulic cylinder and take out the hydraulic piston 1 When reassembling...

Page 331: ...80 3 Disassembling Position Control Valve Spool 1 Remove the nuts 3 2 Draw out the spool 1 with the lever 2 IMPORTANT Measure the length A before disassembling and make sure to reset it when reassembl...

Page 332: ...pet 3 and spring 2 When reassembling Take care not to damage the O ring 39 2 to 58 8 N m Plug 3 4 0 to 6 0 kgf m 28 9 to 43 4 ft Ibs Tightening torque 29 4 to 49 0 N m Plug 2 3 0 to 5 0 kgf m 21 7 to...

Page 333: ...ce exceeds the allowable limit replace the bushing Factory spec 0 020 to 0 110 mm Clearance between 0 0008 to 0 0043 in hydraulic arm shaft and bushing Allowable limit 0 30 mm 0 0118 in Right 37 925 t...

Page 334: ...KEY SWITCH SHUT OFF SYSTEM 9 M8 1 Engine Stop Solenoid 9 M8 5 CHARGING SySTEM 9 M9 1 AC Dynamo 9 M1 0 2 Regulator 9 M10 6 LIGHTING SySTEM 9 M11 1 Head Light 9 M12 2 Turn Signal Light 9 M12 3 Hazard Li...

Page 335: ......

Page 336: ...MEMO...

Page 337: ...12V AC Dynamo m IBatteryr rn B F Oil Pre Water seFu Working Opt iona Head Li gh W White R Red L Blue Y Yellow B Black G Green P Pink Lg Light Green Br Brown Or Orange Sb Sky BIue WG White Green WB Wh...

Page 338: ...R E U g T i 0 85 BR I I Co 0 5 Y 0 5 RY Te 0 5 B Ga 0 5 YL 0 5 WY Combination Swi tc 0 5 RY 0 5 G 0 5 WG 0 5 GW I L LS 1 JI 0 5 YR 0 5 RW R 0 5 Or S 7 0 5 Or I 0 5 RY 0 5 RY I 0 5 Y 0 5 Y Main Switc...

Page 339: ...I I I I I I I I I I I JJ J CD CD a JJ G CD i 0 a CD E J JJ r I I I I I I I I I I I I I I 0 0 J E E JJ OJ CD C O 9 CD E RY RY RY RY RW RY Br RG B R Ill I 1 _ Engine Oil Pressure Lamp Y Or BR L Glow Plu...

Page 340: ...y to the terminal AC thereby causing the starting circuit to be opened stopping the starter motor 12271F90030 1 Main Switch 2 Safety Switches 3 Slow Blow Fuse When the main switch 1 is turned to the P...

Page 341: ...y gears and B2410 B2710 B2910 WSM 12271 1 Housing 2 Magnetic Switch 3 Overrunning Clutch 4 Drive Lever 5 Internal Gear 6 Gear Shaft 7 Planetary Gear 8 Armature Shaft 9 Yoke 10 Brush Holder 11 Rear End...

Page 342: ...prevent the heater 4 from being heated The ignition point is in the area of 2 to 3 mm 0 079 to 0 118 in from the tip of the plug in order to reduce its projection into the combustion chamber 11790F904...

Page 343: ...t Lever Only 82710 Affected Serial No below 15496 1 8all When shifted 2 O ring 3 Poppet 4 Spring 5 Safety Switch 12270F90030 When neutral JrkTr B 12270F90040 9 M7 82410 82710 82910 WSM 12271 A From Ma...

Page 344: ...gh the fuel cut off main switch from the ON position to the OFF position solenoid moves the fuel injection pump control rack to the No 12270M90040 1 Engine Stop Solenoid Flowing of the battery current...

Page 345: ...1 Main Switch 2 Fuse 30 19 50 3 Slow Blow Fuse 4 Regulator T I I I L 5 Battery 6 AC Dynamo 7 Charge Lamp The charging system supplies electric power for various electrical devices and also charges th...

Page 346: ...2P005 12270F90070 12270M90070 2 Regulator A regulator has two functions 1 When the battery voltage is low it turns the SCR on to form a charging circuit to the battery 2 During charging it turns the c...

Page 347: ...rge Lamp 1 7 W 11 Battery 6 Hazard Switch 12 L H Hazard Lamp 1 7 W 7 Flasher Unit 13 RH Hazard Lamp 1 7 W The lighting system consists of combination switch light switch and hazard switch head lights...

Page 348: ...H Tail Light Current passes through the light circuit as shown in the figure above 12270M90100 Battery or Charging System 12270F90110 Turn Signal Light Switch Flasher Unit L H Turn Signal Light L H Tu...

Page 349: ...___ Lamp e ON ___ Lamp e Hazard Switch This is a pushing type switch to turn on the hazard lamps The lamp 2 in the switch is lighted up by the current from out side of the switch when the switch is ON...

Page 350: ...r lamp illuminates 3 Oil Pressure Lamp When the engine oil pressure is low this lamp illuminates 12270M90150 When the engine oil pressure has dropped the engine oil pressure switch is activated to let...

Page 351: ...ection a float and a resistor are used As the float 1 lowers the resistance of the variable resistor 2 varies The relation between the amount of fuel and the resistance is as follows 12010F90120 E CD...

Page 352: ...CHECKING 9 86 1 Main 8witch 9 86 2 Starter 9 88 3 Glow Plug 9 89 4 Safety Switch 9 810 DISASSEMBLING AND A88EMBLING 9 811 8ERVICING 9 812 3 ENGINE KEY SWITCH SHUT OFF SYSTEM 9 814 CHECKING 9 814 4 CHA...

Page 353: ......

Page 354: ...adjusted or defective Repair or Replace 9 S10 Wiring harness disconnected or improperly Repair or Replace 9 S7 connected between main switch 50 terminal and safety switches between safety switches and...

Page 355: ...tion switch 81 terminal between combination switch 1 terminal and headlight between combination switch 2 terminal and head light Tail Light Does Not Fuse blown 10 A Replace G 29 Light Bulb blown Repla...

Page 356: ...defective Replace 9 820 8hort circuit between oil pressure switch lead Repair 9 820 and chassis Circuit in panel board defective Replace Oil Pressure Lamp Bulb blown Replace Does Not Light When Oil pr...

Page 357: ...0 mm 9 0mm 0 551 in 0 354 in GLOW PLUG IGlow Plug IResistance Approx 0 9 ohms 12270590040 TIGHTENING TORQUES Tightening torques of screws bolts and nuts on the table below are especially specified For...

Page 358: ...ce is disregarded damage to alternator and regulator may result 11900890010 1 BATTERY CHECKING Battery Voltage 1 Stop the engine and turn the main switch off 2 Connect the COM lead of the voltmeter to...

Page 359: ...by more than 0 05 replace the battery NOTE Hold the hydrometer tube vertical without removing it from the electrolyte Do not suck too much electrolyte into the tube Allow the float to move freely and...

Page 360: ...tch are faulty 30 terminal AC terminal Resistance 30 terminal 50 terminal Infinity 30 terminal 19 terminal 12010890070 2 Main Switch Key at ON Position 1 Set the main switch ON position 2 Measure the...

Page 361: ...tery positive cable and the leads from the starter M terminal 3 Remove the starter from the engine 4 Disconnect the connecting lead 2 from the starter C terminal 1 5 Connect a jumper lead from the con...

Page 362: ...e chassis 3 Turn the main switch key to the START position and measure the voltage with a voltmeter between the lead terminal and the chassis 4 If the voltage at either position differs from the batte...

Page 363: ...fective replace it Resistance Across When switch push is oohm pushed switch terminal of 1 When switch push is 2 and 4 released Infinity When switch push is Infinity Resistance Across pushed switch ter...

Page 364: ...and remove the rear end frame 14 4 Remove the brush from the brush holder while holding the spring up 5 Remove the brush holder 13 6 Draw out the armature 11 and yoke 12 from the housing 7 Draw out th...

Page 365: ...rs from the battery voltage the wiring harness or main switch is faulty Voltage Main switch key at Approx battery voltage PREHEAT Lead terminal Main switch key at Chassis START Approx battery voltage...

Page 366: ...n the segments of the commutator with an ohmmeter 4 If it does not conduct replace the armature 11900890140 Field Coil 1 Check the continuity between the connecting lead 1 and the brush 2 with an ohmm...

Page 367: ...V is not indicated the fuse the main switch or wiring harness are faulty Voltage Terminal 1 and 2 chassis Approx battery voltage 12270890100 1 1 r 1111 1 Battery 12270F90170 2 Engine Stop Solenoid Te...

Page 368: ...oltage Output INCORRECT 3TBAAAF9P020A CORRECT 3TBAAAF9P020A Dynamo No load Voltage 3 Disconnect the lead wires from the dynamo 4 Start the engine and check the generating voltage af the d nama Factory...

Page 369: ......

Page 370: ...res from the dynamo 2 Start the engine and check the generating voltage of the dynamo Voltage 14 to 15 V Factory spec Dynamo speed 5200 rpm 12270890140 Continuity across Regulator s Terminals 1 Remove...

Page 371: ...Stator Compo 12270890160 Rotor 1 Tap out the shaft 1 from the rotor 3 When reassembling Take care the direction of the collar 4 the flat side should face to the pulley 2 side 1 Shaft 2 Pulley 3 Rotor...

Page 372: ...ch to the ON position 2 Measure the resistance with an ohmmeter across the 81 terminal to the T terminal and the 81 terminal to the terminal 1 3 If 0 ohm is not indicated the head light switch is faul...

Page 373: ...king 1 Hazard Switch 12270890250 Connector Voltage 1 Connect the battery negative code then measure the voltage with a voltmeter across the terminal A and chassis 2 If the voltage differ from the batt...

Page 374: ...right hand light stays on and the left hand light gives flashes earlier by about 20 flashes than when the hazard lamp is activated Then move the turn signal switch to the right and make sure the corre...

Page 375: ...sure switch after turning the main switch OFF 2 Turn the main switch ON and connect a jumper lead from the lead to the chassis 3 If the engine oil pressure indicator lamp does not light the panel boar...

Page 376: ...70890330 Monitor Lamp for Charge Engine Oil Pressure Pre heat Illumination and Hazard 1 After removing the panel board from tractor remove the plate behind the panel 2 Remove the each lamp 3 Measure t...

Page 377: ...x 12 2 ohms at 130 C 266 OF Sensor Reference Approx 23 6 ohms at 105 C 221 F terminal value Approx 51 9 ohms at 80 C 176 OF Chassis Approx 153 9 ohms at 50 C 122 OF 1 Coolant Temperature Sensor a From...

Page 378: ...YSTEM FOR WORKSHOP MANUAL MODEL B2410 B2710 B2910 COUNTRY AFFECTED U S A CANADA AND AUSTRALIA REASON FOR ISSUE To inform the addition of OPC Operator Presence Control system information to Workshop Ma...

Page 379: ...KUBOTA Corporation OSAKA JAPAN 2 13 Bulletin No SFI A 04 015...

Page 380: ...KUBOTA Corporation OSAKA JAPAN 3 13 Bulletin No SFI A 04 015...

Page 381: ...KUBOTA Corporation OSAKA JAPAN 4 13 Bulletin No SFI A 04 015...

Page 382: ...KUBOTA Corporation OSAKA JAPAN 5 13 Bulletin No SFI A 04 015...

Page 383: ...KUBOTA Corporation OSAKA JAPAN 6 13 Bulletin No SFI A 04 015...

Page 384: ...KUBOTA Corporation OSAKA JAPAN 7 13 Bulletin No SFI A 04 015...

Page 385: ...KUBOTA Corporation OSAKA JAPAN 8 13 Bulletin No SFI A 04 015...

Page 386: ...KUBOTA Corporation OSAKA JAPAN 9 13 Bulletin No SFI A 04 015...

Page 387: ...KUBOTA Corporation OSAKA JAPAN 10 13 Bulletin No SFI A 04 015...

Page 388: ...KUBOTA Corporation OSAKA JAPAN 11 13 Bulletin No SFI A 04 015...

Page 389: ...KUBOTA Corporation OSAKA JAPAN 12 13 Bulletin No SFI A 04 015...

Page 390: ...KUBOTA Corporation OSAKA JAPAN 13 13 Bulletin No SFI A 04 015...

Page 391: ...OR KUBOTA FARM INDUSTRIAL MACHINERY SERVICE LTD 64 ISHIZU KITAMACHI SAKAI CITY OSAKA JAPAN PHONE 81 722 41 1129 FAX 81 722 45 2484 E mail ksos pub oa kubota co jp Printed in Japan 2000 02 S EI EI e 15...

Page 392: ...B7800 HSD SUPPLEMENT WORKSHOP MANUAL TRACTOR KiSC issued 09 2007 A...

Page 393: ...rvicing for each section As for the items which are not explained in this section refer to B2410 B2710 B2910 Workshop Manual Q Mechanism Information on the construction and function are included for B...

Page 394: ...with filter 4 1 L 4 3 U S qts 3 6 Imp qts Engine coolant 4 5 L 4 8 U S qts 4 0 Imp qts Transmission case 14 5 L 3 83 U S gals 3 19 Imp gals Front axle case 4 5 L 4 8 U S qts 4 0 Imp qts Dimensions Ove...

Page 395: ...hange the specifications without notice W1030531 Model B7800HSD PTO system Rear PTO shaft SAE 1 3 8 6 splines Revolution 1 speed 540 min 1 rpm at 2584 engine min 1 rpm Mid PTO shaft USA No 5 KUBOTA 10...

Page 396: ...G GENERAL KiSC issued 09 2007 A...

Page 397: ...CONTENTS GENERAL 1 FEATURES G 1 2 TIRES G 2 1 TIRE PRESSURE G 2 2 FRONT TREAD G 2 KiSC issued 09 2007 A...

Page 398: ...Valve 2 E TVCS Three Vortex Combustion System Diesel Engine 3 Hydrostatic Transmission HST 4 3 Speed Ranges 5 Powerful Category 3 Point Hitch 6 Exceptional Hydraulics 7 Full Flat Deck 8 Illuminated In...

Page 399: ...e Tire sizes Inflation pressure Farm Front 7 12 4PR 170 kPa 1 7 kgf cm2 24 psi Rear 12 4 16 4PR 110 kPa 1 1 kgf cm2 16 psi Turf Front 23 8 50 12 4PR 150 kPa 1 5 kgf cm2 22 psi 24 8 50 14 150 kPa 1 5 k...

Page 400: ...1 HYDRAULIC SYSTEM KiSC issued 09 2007 A...

Page 401: ...CONTENTS MECHANISM 1 CONTROL VALVE QUARTER INCHING VALVE 1 M1 2 RELIEF VALVE 1 M3 3 FEEDBACK LINKAGE 1 M4 4 HYDRAULIC CYLINDER 1 M5 KiSC issued 09 2007 A...

Page 402: ...ontrol lever 3 is set to SLOW UP position C the spool 2 is slightly moved to the left The oil forced into the control valve 1 from P port flows to C port in response to the movement of the hydraulic c...

Page 403: ...rol valve 1 from C port flows to T2 port in response to the movement of the hydraulic control lever 3 Since the spool 2 is two stepped land spool the oil forced in the oil passage IC between the spool...

Page 404: ...nimizing valve vibration with the damping effect of the chamber When the oil pressure in the circuit is lower than the setting pressure of the relief valve the relief valve is not operated and the oil...

Page 405: ...5 control lever shaft 6 and control lever arm 7 And after the lift arm 1 moves upward the spool is pushed in and returned to form a neutral circuit by the motions of interlocker 3 lock nut 9 feedback...

Page 406: ...t this time the lowering speed of the implement can be controlled by the lowering speed adjusting valve 2 attached to the hydraulic cylinder 3 Turning the lowering speed adjusting knob clockwise decre...

Page 407: ...RQUES 1 S2 3 HYDRAULIC CYLINDER ASSEMBLY AND HYDRAULIC BLOCK 1 S3 1 CHECKING AND ADJUSTING 1 S3 2 DISASSEMBLING AND ASSEMBLING 1 S5 1 Separating Hydraulic Cylinder Assembly 1 S5 2 Disassembling Hydrau...

Page 408: ...in 15 000 to 15 061 mm 0 5906 to 0 5930 in 2 48 to 2 50 mm 0 0976 to 0 0984 in 0 15 mm 0 0059 in 0 12 mm 0 0047 in 2 40 mm 0 0945 in Relief Valve Setting Pressure 13 2 to 14 2 MPa 135 to 145 kgf cm2 1...

Page 409: ...over mounting screw Connecting plate mounting screws and nuts Joint bolt for delivery pipe to hydraulic cylinder Relief valve plug Hydraulic cylinder assembly mounting screws and nuts Control valve mo...

Page 410: ...lever all way up to operate the relief valve and read the gauge 7 If the pressure is not factory specifications remove the hydraulic cylinder assembly refer to 1 S5 to 1 S7 and adjust relief valve 2...

Page 411: ...o lift position until the lift arm moves to the uppermost position 4 Move the lift arm 1 to the upper end by hand and measure the free play 5 If the measurement is not within the factory specification...

Page 412: ...h connecting plate When reassembling Apply liquid gasket to joint face of the differential case and the hydraulic cylinder W1014733 2 Disassembling Hydraulic Cylinder Assembly Control Valve 1 Remove t...

Page 413: ...hydraulic cylinder and take out the hydraulic piston 1 When reassembling Take care not to damage the O ring 3 and backup ring 2 Apply transmission fluid to the O ring Replace the O ring if it is defe...

Page 414: ...ometer 2 Measure the bushing I D with a cylinder gauge and calculate the clearance 3 If the clearance exceeds the allowable limit replace the bushing W1016134 Tightening torque Relief valve plug 49 0...

Page 415: ...2 ELECTRICAL SYSTEM KiSC issued 09 2007 A...

Page 416: ...CONTENTS MECHANISM 1 WIRING DIAGRAM 2 M1 2 OPERATORS PRESENCE CONTROL OPC 2 M3 1 ENGINE STARTING 2 M5 2 ENGINE AUTOMATICALLY STOPPING AUTOMATIC ENGINE STOP 2 M5 KiSC issued 09 2007 A...

Page 417: ...2 M1 B7800HSD SUPPLEMENT WSM ELECTRICAL SYSTEM 1 WIRING DIAGRAM KiSC issued 09 2007 A...

Page 418: ...2 M2 B7800HSD SUPPLEMENT WSM ELECTRICAL SYSTEM KiSC issued 09 2007 A...

Page 419: ...ller is configured with a delay timer in the controller unit to hold fuel cut signal from the controller unit to fuel cut solenoid for about 1 second 2 Clutch pedal switch This clutch pedal switch det...

Page 420: ...reverse switch to detect tilting the seat This is located under the seat in the front side of the seat support When tilting the seat forward this switch is pushed in and electrical circuit is closed W...

Page 421: ...hown on the table below Condition 2 While keeping the seat reverse switch to ON engaging speed control pedal or mid PTO shift lever as shown on the table below Engine Automatically Stopping Condition...

Page 422: ...CONTENTS SERVICING 1 SERVICING SPECIFICATIONS 2 S1 2 CHECKING AND SERVICING 2 S2 1 STARTING SYSTEM 2 S2 1 Checking and Servicing 2 S2 KiSC issued 09 2007 A...

Page 423: ...0 when depressing the clutch pedal Speed control pedal switch Resistance 0 when placing the pedal to NEUTRAL Mid PTO shift lever switch Mid PTO model PTO shift lever switch Resistance 0 when placing t...

Page 424: ...at Reverse Switch Continuity 1 Disconnect the leads from the seat reverse switch 1 2 Connect the circuit tester to the seat reverse switch connectors 2 3 Measure the resistance between the connectors...

Page 425: ...1 If engine is not started check all part regarding the starting system referring to TROUBLESHOOTING shown on B2410 B2910 WSM 97897 12271 page 9 S1 2 If all part except the controller is not defective...

Page 426: ...de No 9Y011 13031 2002 10 S EI EI e KUBOTA Corporation EDITOR KUBOTA FARM INDUSTRIAL MACHINERY SERVICE LTD 64 ISHIZU KITAMACHI SAKAI KU SAKAI CITY OSAKA 590 0823 JAPAN PHONE 81 72 241 1129 FAX 81 72 2...

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